//
//  Father.h
//  DK_TestApp
//
//  Created by DK on 2017/4/12.
//  Copyright © 2017年 ChunYu. All rights reserved.
//

#import <Foundation/Foundation.h>
#import <objc/runtime.h>

@interface Father : NSObject
- (void)doSth;
@end


@interface Son : Father
- (void)setName:(NSString *)name;
@end
